//
//  VisitorView.swift
//  weiBo
//
//  Created by mac on 15/11/25.
//  Copyright © 2015年 mac. All rights reserved.
//

import UIKit
/// 访客视图 - 处理用户未登录的界面显示
class VisitorView: UIView {
    
    //MARK: 设置视图信息
    func setupInfo(imageName: String?, title: String) {
        messageLabel.text = title
        
        guard let imgName = imageName else {
            startAnim()
            return
        }
        ///
        iconView.image = UIImage(named: imgName)
        //隐藏小房子
        homeIconView.hidden = true
        //将遮罩图像移动到底层
        sendSubviewToBack(maskIconView)
    }
    
    //开启首页转轮动画
    private func startAnim() {
        
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.toValue = M_PI * 2
        anim.repeatCount = MAXFLOAT
        anim.duration = 20
        
        //用房在不断重复动画上,当动画绑定的图层对应的视图被销毁,动画会自动被销毁
        anim.removedOnCompletion = false
        
        //添加到图层
        iconView.layer.addAnimation(anim, forKey: nil)
    }
    
    // initWithFrame 是 UIView 指定构造方法
    // 使用纯代码开发使用的
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        setupUI()
    }
    
    // initWithCoder - 使用 SB & XIB 开发加载的函数
    // 使用 sb 开始的入口
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        
        setupUI()
    }
    
    // MARK: -懒加载控件
    private lazy var iconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_image_smallicon")
    
    private lazy var maskIconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_mask_smallicon")
    
    private lazy var homeIconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_image_house")
    
    private lazy var messageLabel: UILabel = UILabel(title: "关注一些人,回这里看看有什么惊喜关注一些人,回这里看看有什么惊喜")
    
    lazy var registerButton: UIButton = UIButton(title: "注册", color: UIColor.orangeColor(), imageName:  "common_button_white_disable")
    
    lazy var loginButton: UIButton = UIButton(title: "登录", color: UIColor.darkGrayColor(), imageName: "common_button_white_disable")
    
}

extension VisitorView {
    
    /// 设置界面
    private func setupUI() {
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(homeIconView)
        addSubview(messageLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        
        //自动布局
        //图标
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1.0, constant: -60))
        //小房子
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterY, relatedBy: .Equal, toItem: iconView, attribute: .CenterY, multiplier: 1.0, constant: 0))
        //消息文字
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Top, relatedBy: .Equal, toItem: iconView, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 224))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        //注册
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Left, relatedBy: .Equal, toItem: messageLabel, attribute: .Left, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Top, relatedBy: .Equal, toItem: messageLabel, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        //登录
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Right, relatedBy: .Equal, toItem: messageLabel, attribute: .Right, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Top, relatedBy: .Equal, toItem: messageLabel, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        //遮罩
        //VFL: 可视化标记语言
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[mask]-0-|", options: [], metrics: nil, views: ["mask": maskIconView]))
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[mask]-(btnHeight)-[register]", options: [], metrics: ["btnHeight": -36], views: ["mask": maskIconView, "register": registerButton]))
        
        //设置背景颜色
        backgroundColor = UIColor(white: 237.0 / 255.0, alpha: 1.0)
        
    }
}